Extension registration wall of superpowers!

754/903 - 83.50%

In MediaWiki 1.25, a new system of loading extensions was introduced, called extension registration. Documentation
is available on mediawiki.org.
This tracks the conversion of extensions to the new system. Once over 50% of extensions are converted, the page name
will automatically change to "wall of superpowers!".
This page should update hourly.
Inspired by the Python 3 Wall of Superpowers.